Renesas M34502T-MCU - Manual (Page 29)

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5.6 Port I/O Characteristics
With the M34502T-MCU, port I/O characteristics are different from those of actual MCUs because
there is an emulation circuit in ports P0, P1, P2 and D
0
to D
5
. Table 5.3 lists port I/O characteristics
of the M34502T-MCU.
Table 5.3 Emulation port I/O characteristics
5.7 Pullup Transistor
Since ports P
0
, P
1
, D
2
and D
3
contain emulation circuits, the pullup transistor in an MCU cannot be used.
For the M34502T-MCU, the pullup resistor of 51 k Ω is mounted. When it is necessary to change the
pullup resistor, replace the resistance arrays of R3 and R4.
Port
P0, P1
Input 74HC4050
Device Item Voltage (V
CC
)
2.0 V
4.5 V
2.0 V
4.5 V
Min.
1.5 V
3.15 V
-
-
-
-
-
-
160 Ω
70 Ω
Max.
-
-
0.5 V
1.35 V
250 µ A
40 mA
0.4 V
0.7 V
-
130 Ω
Remarks
V
OH
= MAX
I
OL
= 16 mA
I
OL
= MAX
V
I/O
= V
CC
to GND
I
I/O
≤ 1 mA
V
I/O
= V
CC
or GND
I
I/O
≤ 1 mA
V
I/O
= V
CC
to GND
I
I/O ≤ 1 mA
V
OH
= MAX
I
OL
= 16 mA
I
OL
= MAX
96 Ω 200 Ω
10 Ω -
1.5 V
3.15 V
-
-
-
-
-
-
-
-
0.5 V
1.35 V
250 µ A
40 mA
0.4 V
0.7 V
4.75 V
2.0 V
4.5 V
4.5 V
2.0 V
4.5 V
2.0 V
4.5 V
4.75 V
V
IH
V
IL
I
OH
I
OL
V
OL
R
ON
R
ON
V
IH
V
IL
I
OH
I
OL
V
OL
74LS06
74HC4066
74HC4050
74LS06
Output
Input/
output
Input
Output
P2
D
5
- D
0